PGMAllPool.cpp revision 9d4c9e0a3e2dcc3bd19303d7b4e2d96d12c11814
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * PGM Shadow Page Pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Copyright (C) 2006-2010 Oracle Corporation
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * available from http://www.virtualbox.org. This file is free software;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * you can redistribute it and/or modify it under the terms of the GNU
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * General Public License (GPL) as published by the Free Software
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync/*******************************************************************************
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync* Header Files *
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync*******************************************************************************/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync/*******************************************************************************
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync* Internal Functions *
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync*******************************************************************************/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncstatic const char *pgmPoolPoolKindToStr(uint8_t enmKind);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync#if 0 /*defined(VBOX_STRICT) && defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT)*/
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncstatic void pgmPoolTrackCheckPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param enmKind The page kind.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync return true;
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync return false;
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * Flushes a chain of pages sharing the same access monitor.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @returns VBox status code suitable for scheduling.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param pPool The pool.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param pPage A page in the chain.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @todo VBOXSTRICTRC
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %RGp type=%d\n", pPage->GCPhys, pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Find the list head.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Iterate the list flushing each shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Wrapper for getting the current context pointer to the entry being modified.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code suitable for scheduling.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvDst Destination address
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvSrc Source guest virtual address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysSrc The source guest physical address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param cb Size of data to read
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(int) pgmPoolPhysSimpleReadGCPhys(PVM pVM, void *pvDst, CTXTYPE(RTGCPTR, RTHCPTR, RTGCPTR) pvSrc,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync memcpy(pvDst, (RTHCPTR)((uintptr_t)pvSrc & ~(RTHCUINTPTR)(cb - 1)), cb);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* @todo in RC we could attempt to use the virtual address, although this can cause many faults (PAE Windows XP guest). */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return PGMPhysSimpleReadGCPhys(pVM, pvDst, GCPhysSrc & ~(RTGCPHYS)(cb - 1), cb);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Process shadow entries before they are changed by the guest.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * For PT entries we will clear them. For PD entries, we'll simply check
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * for mapping conflicts and set the SyncCR3 FF if found.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVCpu VMCPU handle
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The head page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysFault The guest physical fault address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param uAddress In R0 and GC this is the guest context fault address (flat).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * In R3 this is the host context 'fault' address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param cbWrite Write size; might be zero if the caller knows we're not crossing entry boundaries
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolMonitorChainChanging(PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync CTXTYPE(RTGCPTR, RTHCPTR, RTGCPTR) pvAddress, unsigned cbWrite)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX, ("%u (idx=%u)\n", pPage->iMonitoredPrev, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: %RGv phys=%RGp cbWrite=%d\n", (RTGCPTR)(CTXTYPE(RTGCPTR, uintptr_t, RTGCPTR))pvAddress, GCPhysFault, cbWrite));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: page idx=%d phys=%RGp (next=%d) kind=%s\n", pPage->idx, pPage->GCPhys, pPage->iMonitoredNext, pgmPoolPoolKindToStr(pPage->enmKind), cbWrite));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT iShw=%x\n", iShw));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolMonitorChainChanging 32_32: deref %016RX64 GCPhys %08RX32\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* page/2 sized */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("PGMPOOLKIND_PAE_PT_FOR_32BIT_PT iShw=%x\n", iShw));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %016RX64 GCPhys %08RX32\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging PAE for 32 bits: iGst=%x iShw=%x idx = %d page idx=%d\n", iGst, iShw, iShwPdpt, pPage->enmKind - PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (iShwPdpt == pPage->enmKind - (unsigned)PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD)
09f4b412099acda62997fd82c8608075c453b3ebvboxsync for (unsigned i = 0; i < 2; i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((uShw.pPDPae->a[iShw + i].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShwPdpt=%#x iShw=%#x!\n", iShwPdpt, iShw+i));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* !IN_RING0 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw+i, uShw.pPDPae->a[iShw+i].u));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* paranoia / a bit assumptive. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShwPdpt=%#x iShw2=%#x!\n", iShwPdpt, iShw2));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* !IN_RING0 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", PGMSHWPTEPAE_GET_HCPHYS(uShw.pPTPae->a[iShw]), GstPte.u & X86_PTE_PAE_PG_MASK));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync /* paranoia / a bit assumptive. */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTEPAE);
09f4b412099acda62997fd82c8608075c453b3ebvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, (RTHCPTR)((RTHCUINTPTR)pvAddress + sizeof(GstPte)), GCPhysFault + sizeof(GstPte), sizeof(GstPte));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress + sizeof(GstPte), GCPhysFault + sizeof(GstPte), sizeof(GstPte));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", PGMSHWPTEPAE_GET_HCPHYS(uShw.pPTPae->a[iShw2]), GstPte.u & X86_PTE_PAE_PG_MASK));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
09f4b412099acda62997fd82c8608075c453b3ebvboxsync LogFlow(("pgmPoolMonitorChainChanging: PGMPOOLKIND_32BIT_PD %x\n", iShw));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync# endif /* !IN_RING0 */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync# endif /* !IN_RING0 */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* paranoia / a bit assumptive. */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTE);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
dc959f60f6d3e0cba86f7da4d39aa475913a7e10vboxsync# endif /* !IN_RING0 */
dc959f60f6d3e0cba86f7da4d39aa475913a7e10vboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPD->a[iShw2].u));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# ifdef IN_RC /* TLB load - we're pushing things a bit... */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFree(pVM, uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync#endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Causes trouble when the guest uses a PDE to refer to the whole page table level
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * structure. (Invalidate here; faults later on when it tries to change the page
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * table entries -> recheck; probably only applies to the RC case.)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* paranoia / a bit assumptive. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync#endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPDPT));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Hopefully this doesn't happen very often:
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * - touching unused parts of the page
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * - messing with the bits of pd pointers without changing the physical address
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* PDPT roots are not page aligned; 32 byte only! */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned offPdpt = GCPhysFault - pPage->GCPhys;
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use RT_ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected pdpt conflict at iShw=%#x!\n", iShw));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* paranoia / a bit assumptive. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned iShw2 = (offPdpt + cbWrite - 1) / sizeof(X86PDPE);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync# endif /* !IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Assert(!(uShw.pPDPae->a[iShw].u & PGM_PDFLAGS_MAPPING));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* paranoia / a bit assumptive. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Assert(!(uShw.pPDPae->a[iShw2].u & PGM_PDFLAGS_MAPPING));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPDPT));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Hopefully this doesn't happen very often:
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * - messing with the bits of pd pointers without changing the physical address
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolFree(pVM, uShw.pPDPT->a[iShw].u & X86_PDPE_PG_MASK, pPage->idx, iShw);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* paranoia / a bit assumptive. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDPE);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolFree(pVM, uShw.pPDPT->a[iShw2].u & X86_PDPE_PG_MASK, pPage->idx, iShw2);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPML4));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Hopefully this doesn't happen very often:
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * - messing with the bits of pd pointers without changing the physical address
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPML4->a[iShw].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw].u & X86_PML4E_PG_MASK, pPage->idx, iShw);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /* paranoia / a bit assumptive. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PML4E);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPML4->a[iShw2].u));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw2].u & X86_PML4E_PG_MASK, pPage->idx, iShw2);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync#endif /* IN_RING0 */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Checks if a access could be a fork operation in progress.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Meaning, that the guest is setting up the parent process for Copy-On-Write.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @returns true if it's likely that we're forking, otherwise false.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pPool The pool.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pDis The disassembled instruction.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param offFault The access offset.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pDis, unsigned offFault)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * i386 linux is using btr to clear X86_PTE_RW.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * The functions involved are (2.6.16 source inspection):
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * clear_bit
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * ptep_set_wrprotect
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_one_pte
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_pte_range
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_pmd_range
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_pud_range
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_page_range
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * copy_process
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,Fork));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync return true;
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync return false;
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * Determine whether the page is likely to have been reused.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @returns true if we consider the page as being reused for a different purpose.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @returns false if we consider it to still be a paging page.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @param pVM The VM handle.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @param pVCpu VMCPU Handle.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @param pRegFrame Trap register frame.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pDis The disassembly info for the faulting instruction.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvFault The fault address.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, RTGCPTR pvFault)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo could make this general, faulting close to rsp should be a safe reuse heuristic. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Fault caused by stack writes while trying to inject an interrupt event. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolMonitorIsReused: reused %RGv for interrupt stack (rsp=%RGv).\n", pvFault, pRegFrame->rsp));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("Reused instr %RGv %d at %RGv param1.fUse=%llx param1.reg=%d\n", pRegFrame->rip, pDis->pCurInstr->opcode, pvFault, pDis->param1.fUse, pDis->param1.base.reg_gen));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Non-supervisor mode write means it's used for something else. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* call implies the actual push of the return address faulted */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync return true;
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pDis->fPrefix == (DISPREFIX_REP|DISPREFIX_REX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes the page being accessed.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code suitable for scheduling.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVCpu The VMCPU handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The pool page (head).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pDis The disassembly of the write instruction.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pRegFrame The trap register frame.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysFault The fault address as guest physical address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvFault The fault address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @todo VBOXSTRICTRC
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * First, do the flushing.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Must do this in raw mode (!); XP boot will fail otherwise.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync VBOXSTRICTRC rc2 = EMInterpretInstructionDisasState(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_ALL);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(rc2 == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rc2))); /* ASSUMES no complicated stuff here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->StatMonitorRZIntrFailPatch2);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Rrc (flushed)\n", rc));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Handles the STOSD write accesses.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code suitable for scheduling.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The pool page (head).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pDis The disassembly of the write instruction.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pRegFrame The trap register frame.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysFault The fault address as guest physical address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvFault The fault address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pDis->mode == DISCPUMODE_32BIT || pDis->mode == DISCPUMODE_64BIT);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Increment the modification counter and insert it into the list
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * of modified pages the first time.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Execute REP STOSD.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * write situation, meaning that it's safe to write here.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, uIncrement);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, uIncrement);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PGMPhysSimpleWriteGCPhys(pVM, GCPhysFault, &pRegFrame->rax, uIncrement);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Handles the simple write accesses.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code suitable for scheduling.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVCpu The VMCPU handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The pool page (head).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pDis The disassembly of the write instruction.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pRegFrame The trap register frame.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysFault The fault address as guest physical address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvFault The fault address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pfReused Reused state (in/out)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault, bool *pfReused)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Increment the modification counter and insert it into the list
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * of modified pages the first time.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear all the pages. ASSUMES that pvFault is readable.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
2721dfb0e330d57ba888311520f5a343c64e7cefvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, DISGetParamSize(pDis, &pDis->param1));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, DISGetParamSize(pDis, &pDis->param1));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Interpret the instruction.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync VBOXSTRICTRC rc = EMInterpretInstructionDisasState(pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_ALL);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(rc == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rc))); /* ASSUMES no complicated stuff here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for %04x:%RGv - opcode=%d\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->rip, pDis->pCurInstr->opcode));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if 0 /* experimental code */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvFault, GCPhysFault, sizeof(GstPte));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Check the new value written by the guest. If present and with a bogus physical address, then
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * it's fairly safe to assume the guest is reusing the PT.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMPhysGCPhys2HCPhys(pVM, GstPte.u & X86_PTE_PAE_PG_MASK, &HCPhys);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Rrc\n", VBOXSTRICTRC_VAL(rc)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * \#PF Handler callback for PT write accesses.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code (appropriate for GC return).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param uErrorCode CPU Error code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pRegFrame Trap register frame.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * NULL on DMA and other non CPU access.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvFault The fault address (cr2).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pvUser User argument.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fForcedFlush = false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%RGv pPage=%p:{.idx=%d} GCPhysFault=%RGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync if (PHYS_PAGE_ADDRESS(GCPhysFault) != PHYS_PAGE_ADDRESS(pPage->GCPhys))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Pool page changed while we were waiting for the lock; ignore. */
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync Log(("CPU%d: pgmPoolAccessHandler pgm pool page for %RGp changed (to %RGp) while waiting!\n", pVCpu->idCpu, PHYS_PAGE_ADDRESS(GCPhysFault), PHYS_PAGE_ADDRESS(pPage->GCPhys)));
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,Handled), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return VINF_SUCCESS; /* SMP guest case where we were blocking on the pgm lock while the same page was being marked dirty. */
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync#if 0 /* test code defined(VBOX_STRICT) && defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT) */
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTX_SUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync pgmPoolTrackCheckPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst);
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * Disassemble the faulting instruction.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync int rc = EMInterpretDisasOne(pVM, pVCpu, pRegFrame, pDis, NULL);
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync AssertMsg(rc == VERR_PAGE_NOT_PRESENT || rc == VERR_PAGE_TABLE_NOT_PRESENT, ("Unexpected rc %d\n", rc));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * We should ALWAYS have the list head as user parameter. This
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * is because we use that page to record the changes.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Maximum nr of modifications depends on the page type. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_32BIT_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Incremental page table updates should weigh more than random ones.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * (Only applies when started from offset 0)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pPage->GCPtrLastAccessHandlerRip >= pRegFrame->rip - 0x40 /* observed loops in Windows 7 x64 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pPage->GCPtrLastAccessHandlerRip < pRegFrame->rip + 0x40
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pvFault == (pPage->GCPtrLastAccessHandlerFault + pDis->param1.cb)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pVCpu->pgm.s.cPoolAccessHandler == pPage->cLastAccessHandler + 1)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Possible page reuse cMods=%d -> %d (locked=%d type=%s)\n", pPage->cModifications, pPage->cModifications * 2, pgmPoolIsPageLocked(pPage), pgmPoolPoolKindToStr(pPage->enmKind)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->cLastAccessHandler = pVCpu->pgm.s.cPoolAccessHandler;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FlushReinit));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Mod overflow %RGv cMods=%d (locked=%d type=%s)\n", pvFault, pPage->cModifications, pgmPoolIsPageLocked(pPage), pgmPoolPoolKindToStr(pPage->enmKind)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Check if it's worth dealing with.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fReused = false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( ( pPage->cModifications < cMaxModifications /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && !(fReused = pgmPoolMonitorIsReused(pVM, pVCpu, pRegFrame, pDis, pvFault))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && !pgmPoolMonitorIsForking(pPool, pDis, GCPhysFault & PAGE_OFFSET_MASK))
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Simple instructions, no REP prefix.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (!(pDis->fPrefix & (DISPREFIX_REP | DISPREFIX_REPNE)))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolAccessHandlerSimple(pVM, pVCpu, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault, &fReused);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* A mov instruction to change the first page table entry will be remembered so we can detect
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * full page table changes early on. This will reduce the amount of unnecessary traps we'll take.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && !pPage->cLocked /* only applies to unlocked pages as we can't free locked ones (e.g. cr3 root). */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->cLastAccessHandler = pVCpu->pgm.s.cPoolAccessHandler;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Make sure we don't kick out a page too quickly. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync else if (pPage->GCPtrLastAccessHandlerFault == pvFault)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* ignore the 2nd write to this page table entry. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->cLastAccessHandler = pVCpu->pgm.s.cPoolAccessHandler;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,Handled), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * We have to deal with these or we'll kill the cache and performance.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fValidStosd = false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pDis->fPrefix == (DISPREFIX_REP | DISPREFIX_REX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pRegFrame->rcx * 8 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && (pRegFrame->rax == 0 || pRegFrame->rax == 0x80) /* the two values observed. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,RepStosd), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* REP prefix, don't bother. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,RepPrefix));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x rip=%RGv opcode=%d prefix=%#x\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, (RTGCPTR)pRegFrame->rip, pDis->pCurInstr->opcode, pDis->fPrefix));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT) && defined(IN_RING0)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* E.g. Windows 7 x64 initializes page tables and touches some pages in the table during the process. This
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * leads to pgm pool trashing and an excessive amount of write faults due to page monitoring.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT || pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_32BIT_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || ( !pgmPoolMonitorIsReused(pVM, pVCpu, pRegFrame, pDis, pvFault)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && !pgmPoolMonitorIsForking(pPool, pDis, GCPhysFault & PAGE_OFFSET_MASK))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Flush any monitored duplicates as we will disable write protection. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Find the monitor head. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync while (pPageHead->iMonitoredPrev != NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPageHead = &pPool->aPages[pPageHead->iMonitoredPrev];
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Flush duplicate page idx=%d GCPhys=%RGp type=%s\n", pPageHead->idx, pPageHead->GCPhys, pgmPoolPoolKindToStr(pPageHead->enmKind)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* The flushing above might fail for locked pages, so double check. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Temporarily allow write access to the page table again. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGMHandlerPhysicalPageTempOff(pVM, pPage->GCPhys & PAGE_BASE_GC_MASK, pPage->GCPhys & PAGE_BASE_GC_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGMShwMakePageWritable(pVCpu, pvFault, PGM_MK_PG_IS_WRITE_FAULT);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* In the SMP case the page table might be removed while we wait for the PGM lock in the trap handler. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync ("PGMShwModifyPage -> GCPtr=%RGv rc=%d\n", pvFault, rc));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* PGMPOOL_WITH_OPTIMIZED_DIRTY_PT */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FlushModOverflow));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Not worth it, so flush it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * If we considered it to be reused, don't go back to ring-3
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * to emulate failed instructions since we usually cannot
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * interpret then. This may be a bit risky, in which case
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * the reuse detection must be fixed.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolAccessHandlerFlush(pVM, pVCpu, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Make sure that the current instruction still has shadow page backing, otherwise we'll end up in a loop. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (PGMShwGetPage(pVCpu, pRegFrame->rip, NULL, NULL) == VINF_SUCCESS)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = VINF_SUCCESS; /* safe to restart the instruction. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,FlushPage), a);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* !IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Check references to guest physical memory in a PAE / PAE page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pGstPT The guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackCheckPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned cErrors = 0;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned LastPTE = ~0U; /* initialized to shut up gcc */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTHCPHYS LastHCPhys = NIL_RTHCPHYS; /* initialized to shut up gcc */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMPhysGCPhys2HCPhys(pVM, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK, &HCPhys);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) != HCPhys)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("rc=%d idx=%d guest %RX64 shw=%RX64 vs %RHp\n", rc, i, pGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
e6ad2e18e663b076aeabfec994947514566a7accvboxsync rc = PGMPhysGCPhys2HCPhys(pVM, pPage->GCPhys, &HCPhysPT);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned iPage = 0; iPage < pPool->cCurPages; iPage++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pTempPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMSHWPTPAE pShwPT2 = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pTempPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && PGMSHWPTEPAE_GET_HCPHYS(pShwPT2->a[j]) == HCPhysPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("GCPhys=%RGp idx=%d %RX64 vs %RX64\n", pTempPage->GCPhys, j, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), PGMSHWPTEPAE_GET_LOG(pShwPT2->a[j])));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!cErrors, ("cErrors=%d: last rc=%d idx=%d guest %RX64 shw=%RX64 vs %RHp\n", cErrors, LastRc, LastPTE, pGstPT->a[LastPTE].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[LastPTE]), LastHCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Check references to guest physical memory in a PAE / 32-bit page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pGstPT The guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackCheckPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PT pGstPT)
e6ad2e18e663b076aeabfec994947514566a7accvboxsync unsigned cErrors = 0;
e6ad2e18e663b076aeabfec994947514566a7accvboxsync unsigned LastPTE = ~0U; /* initialized to shut up gcc */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTHCPHYS LastHCPhys = NIL_RTHCPHYS; /* initialized to shut up gcc */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMPhysGCPhys2HCPhys(pVM, pGstPT->a[i].u & X86_PTE_PG_MASK, &HCPhys);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) != HCPhys)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("rc=%d idx=%d guest %x shw=%RX64 vs %RHp\n", rc, i, pGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
e6ad2e18e663b076aeabfec994947514566a7accvboxsync rc = PGMPhysGCPhys2HCPhys(pVM, pPage->GCPhys, &HCPhysPT);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned iPage = 0; iPage < pPool->cCurPages; iPage++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pTempPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_32BIT_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMSHWPTPAE pShwPT2 = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pTempPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && PGMSHWPTEPAE_GET_HCPHYS(pShwPT2->a[j]) == HCPhysPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("GCPhys=%RGp idx=%d %RX64 vs %RX64\n", pTempPage->GCPhys, j, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), PGMSHWPTEPAE_GET_LOG(pShwPT2->a[j])));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!cErrors, ("cErrors=%d: last rc=%d idx=%d guest %x shw=%RX64 vs %RHp\n", cErrors, LastRc, LastPTE, pGstPT->a[LastPTE].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[LastPTE]), LastHCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* VBOX_STRICT && !IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns nr of changed PTEs
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
e6ad2e18e663b076aeabfec994947514566a7accvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pGstPT The guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pOldGstPT The old cached guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fAllowRemoval Bail out as soon as we encounter an invalid PTE
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pfFlush Flush reused page table (out)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackFlushPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PCX86PTPAE pOldGstPT, bool fAllowRemoval, bool *pfFlush)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned cChanged = 0;
e6ad2e18e663b076aeabfec994947514566a7accvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Check the new value written by the guest. If present and with a bogus physical address, then
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * it's fairly safe to assume the guest is reusing the PT.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (!PGMPhysIsGCPhysValid(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* If the old cached PTE is identical, then there's no need to flush the shadow copy. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pGstPT->a[i].u & X86_PTE_PAE_PG_MASK) == (pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK, &HCPhys);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(rc == VINF_SUCCESS && PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) == HCPhys, ("rc=%d guest %RX64 old %RX64 shw=%RX64 vs %RHp\n", rc, pGstPT->a[i].u, pOldGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint64_t uHostAttr = PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G | X86_PTE_PAE_NX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fHostRW = !!(PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & X86_PTE_RW);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint64_t uGuestAttr = pGstPT->a[i].u & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G | X86_PTE_PAE_NX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Something was changed, so flush it. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX64 hint=%RX64\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns nr of changed PTEs
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pGstPT The guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pOldGstPT The old cached guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fAllowRemoval Bail out as soon as we encounter an invalid PTE
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pfFlush Flush reused page table (out)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackFlushPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PT pGstPT,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PCX86PT pOldGstPT, bool fAllowRemoval, bool *pfFlush)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned cChanged = 0;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Check the new value written by the guest. If present and with a bogus physical address, then
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * it's fairly safe to assume the guest is reusing the PT.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (!PGMPhysIsGCPhysValid(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PG_MASK))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* If the old cached PTE is identical, then there's no need to flush the shadow copy. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pGstPT->a[i].u & X86_PTE_PG_MASK) == (pOldGstPT->a[i].u & X86_PTE_PG_MASK))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PG_MASK, &HCPhys);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(rc == VINF_SUCCESS && PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) == HCPhys, ("rc=%d guest %x old %x shw=%RX64 vs %RHp\n", rc, pGstPT->a[i].u, pOldGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint64_t uHostAttr = PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fHostRW = !!(PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & X86_PTE_RW);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint64_t uGuestAttr = pGstPT->a[i].u & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G);
eb2d4958f7faf812c3bdb2d7587d815022f0bd55vboxsync /* Something was changed, so flush it. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX64 hint=%x\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PG_MASK, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flush a dirty page
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param idxSlot Dirty array slot index
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fAllowRemoval Allow a reused page table to be removed
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolFlushDirtyPage(PVM pVM, PPGMPOOL pPool, unsigned idxSlot, bool fAllowRemoval = false)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPool->aDirtyPages[idxSlot].uIdx == NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(pPage->fDirty, ("Page %RGp (slot=%d) not marked dirty!", pPage->GCPhys, idxSlot));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Flush dirty page %RGp cMods=%d\n", pPage->GCPhys, pPage->cModifications));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* First write protect the page again to catch all write accesses. (before checking for changes -> SMP) */
441b60f8b0601cc1718368c9c3ef082223ad12a2vboxsync int rc = PGMHandlerPhysicalReset(pVM, pPage->GCPhys & PAGE_BASE_GC_MASK);
e6ad2e18e663b076aeabfec994947514566a7accvboxsync rc = PGMShwGetPage(VMMGetCpu(pVM), pPage->GCPtrDirtyFault, &fFlags, &HCPhys);
441b60f8b0601cc1718368c9c3ef082223ad12a2vboxsync && (!(fFlags & X86_PTE_RW) || HCPhys != pPage->Core.Key))
441b60f8b0601cc1718368c9c3ef082223ad12a2vboxsync /* In the SMP case the page table might be removed while we wait for the PGM lock in the trap handler. */
441b60f8b0601cc1718368c9c3ef082223ad12a2vboxsync ("PGMShwGetPage -> GCPtr=%RGv rc=%d flags=%RX64\n", pPage->GCPtrDirtyFault, rc, fFlags));
441b60f8b0601cc1718368c9c3ef082223ad12a2vboxsync /* Flush those PTEs that have changed. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGM_GCPHYS_2_PTR_EX(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync cChanges = pgmPoolTrackFlushPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync (PCX86PTPAE)&pPool->aDirtyPages[idxSlot].aPage[0], fAllowRemoval, &fFlush);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync cChanges = pgmPoolTrackFlushPTPae32Bit(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PT)pvGst,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync (PCX86PT)&pPool->aDirtyPages[idxSlot].aPage[0], fAllowRemoval, &fFlush);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Note: we might want to consider keeping the dirty page active in case there were many changes. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* This page is likely to be modified again, so reduce the nr of modifications just a bit here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->cModifications = RT_MAX(1, pPage->cModifications / 2);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPool->cDirtyPages == RT_ELEMENTS(pPool->aDirtyPages))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aDirtyPages[idxSlot].uIdx = NIL_PGMPOOL_IDX;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Removed dirty page %RGp cMods=%d cChanges=%d\n", pPage->GCPhys, pPage->cModifications, cChanges));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Add a new dirty page
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolAddDirtyPage(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage)
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync AssertCompile(RT_ELEMENTS(pPool->aDirtyPages) == 8 || RT_ELEMENTS(pPool->aDirtyPages) == 16);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPool->cDirtyPages >= RT_ELEMENTS(pPool->aDirtyPages))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->StatDirtyPageOverFlowFlush);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, idxFree, true /* allow removal of reused page tables*/);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPool->cDirtyPages < RT_ELEMENTS(pPool->aDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(pPool->aDirtyPages[idxFree].uIdx == NIL_PGMPOOL_IDX, ("idxFree=%d cDirtyPages=%d\n", idxFree, pPool->cDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Add dirty page %RGp (slot=%d)\n", pPage->GCPhys, idxFree));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Make a copy of the guest page table as we require valid GCPhys addresses
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * when removing references to physical pages.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * (The HCPhys linear lookup is *extremely* expensive!)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync int rc = PGM_GCPHYS_2_PTR_EX(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync memcpy(&pPool->aDirtyPages[idxFree].aPage[0], pvGst, (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT) ? PAGE_SIZE : PAGE_SIZE/2);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackCheckPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackCheckPTPae32Bit(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PT)pvGst);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->idxDirtyEntry = (uint8_t)idxFree; Assert(pPage->idxDirtyEntry == idxFree);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->idxFreeDirtyPage = (pPool->idxFreeDirtyPage + 1) & (RT_ELEMENTS(pPool->aDirtyPages) - 1);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pPool->cDirtyPages < RT_ELEMENTS(pPool->aDirtyPages)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx != NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned i;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (i = 1; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync idxFree = (pPool->idxFreeDirtyPage + i) & (RT_ELEMENTS(pPool->aDirtyPages) - 1);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPool->aDirtyPages[idxFree].uIdx == NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPool->cDirtyPages == RT_ELEMENTS(pPool->aDirtyPages) || pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx == NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* !IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Check if the specified page is dirty (not write monitored)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @return dirty or not
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync * @param GCPhys Guest physical address
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
4c98b8b05f3783351cf256cc90cd4478fb28b62bvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Reset all dirty pages by reinstating page monitoring.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, i, true /* allow removal of reused page tables*/);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pPool->cDirtyPages != RT_ELEMENTS(pPool->aDirtyPages)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx != NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned i;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (i = 1; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(i != RT_ELEMENTS(pPool->aDirtyPages), ("cDirtyPages %d", pPool->cDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx == NIL_PGMPOOL_IDX || pPool->cDirtyPages == RT_ELEMENTS(pPool->aDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Invalidate the PT entry for the specified page
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPtrPage Guest page to invalidate
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolResetDirtyPage(PVM pVM, RTGCPTR GCPtrPage)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aDirtyPages));
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * Reset all dirty pages by reinstating page monitoring.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @param pVM The VM handle.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @param GCPhysPT Physical address of the page table
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsyncvoid pgmPoolInvalidateDirtyPage(PVM pVM, RTGCPHYS GCPhysPT)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aDirtyPages));
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync unsigned idxDirtyPage = RT_ELEMENTS(pPool->aDirtyPages);
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (idxDirtyPage != RT_ELEMENTS(pPool->aDirtyPages))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, idxDirtyPage, true /* allow removal of reused page tables*/);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ( pPool->cDirtyPages != RT_ELEMENTS(pPool->aDirtyPages)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && pPool->aDirtyPages[pPool->idxFreeDirtyPage].uIdx != NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync unsigned i;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(i != RT_ELEMENTS(pPool->aDirtyPages), ("cDirtyPages %d", pPool->cDirtyPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* PGMPOOL_WITH_OPTIMIZED_DIRTY_PT */
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Inserts a page into the GCPhys hash table.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param pPool The pool.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param pPage The page.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync Log3(("pgmPoolHashInsert: %RGp\n", pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Removes a page from the GCPhys hash table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolHashRemove: %RGp\n", pPage->GCPhys));
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync AssertReleaseMsgFailed(("GCPhys=%RGp idx=%d\n", pPage->GCPhys, pPage->idx));
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * Frees up one cache page.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @returns VBox status code.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @retval VINF_SUCCESS on success.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @param pPool The pool.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @param iUser The user index.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * Select one page from the tail of the age list.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync iToFree = i;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Reject any attempts at flushing the currently active shadow CR3 mapping.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Call pgmPoolCacheUsed to move the page to the head of the age list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolCacheFreeOne: refuse CR3 mapping\n"));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertLogRelReturn(iLoop < 8192, VERR_PGM_POOL_TOO_MANY_LOOPS);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Found a usable page, flush it and return.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* This flush was initiated by us and not the guest, so explicitly flush the TLB. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* todo: find out why this is necessary; pgmPoolFlushPage should trigger a flush if one is really needed. */
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Checks if a kind mismatch is really a page being reused
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * or if it's just normal remappings.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns false if not reused.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmKind1 The kind of the cached page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmKind2 The kind of the requested page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Never reuse them. There is no remapping in non-paging mode.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGMPOOLKIND_PAE_PDPT_FOR_32BIT: /* never reuse them for other types */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return true;
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return false;
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return true;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
521d8df5a1a304406b911c2e2c7bf9214d6d9200vboxsync return false;
521d8df5a1a304406b911c2e2c7bf9214d6d9200vboxsync * Attempts to satisfy a pgmPoolAlloc request from the cache.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_PGM_CACHED_PAGE on success.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VERR_FILE_NOT_FOUND if not found.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmKind The kind of mapping.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmAccess Access type for the mapping (only relevant for big pages)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fA20Enabled Whether the CPU has the A20 gate enabled.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUser The shadow page pool index of the user table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUserTable The index into the user table (shadowed).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param ppPage Where to store the pointer to the page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, PGMPOOLACCESS enmAccess, bool fA20Enabled,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Look up the GCPhys in the hash.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolCacheAlloc: %RGp kind %s iUser=%d iUserTable=%x SLOT=%d\n", GCPhys, pgmPoolPoolKindToStr(enmKind), iUser, iUserTable, i));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolCacheAlloc: slot %d found page %RGp\n", i, pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Put it at the start of the use list to make sure pgmPoolTrackAddUser
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * doesn't flush it in case there are no more free use records.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->cModifications = 1; /* reset counter (can't use 0, or else it will be reinserted in the modified list) */
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * The kind is different. In some cases we should now flush the page
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * as it has been reused, but in most cases this is normal remapping
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * of PDs as PT or big pages using the GCPhys field in a slightly
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * different way than the other kinds.
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync if (pgmPoolCacheReusedByKind((PGMPOOLKIND)pPage->enmKind, enmKind))
0cb5af53de7aed97b1b35311f93de8175756e4afvboxsync } while (i != NIL_PGMPOOL_IDX);
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%s\n", GCPhys, pgmPoolPoolKindToStr(enmKind)));
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * Inserts a page into the cache.
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The cached page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync * Insert into the GCPhys hash if the page is fit for that.
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
6d9d4a12f6f9f341c968f711765c2c17c9a5a28cvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Insert at the head of the age list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes a cached page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The cached page.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolCacheFlushPage: %RGp\n", pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Remove the page from the hash.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Remove it from the age list.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Looks for pages sharing the monitor.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns Pointer to the head page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns NULL if not found.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The Pool
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pNewPage The page which is going to be monitored.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Look up the GCPhys in the hash.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* find the head */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* ignore, no monitoring. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync } while (i != NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Enabled write monitoring of a guest page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS on success.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The cached page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorInsert %RGp\n", pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK));
d64aa881df34a86dd70ab0e1b7b94ffa41be9731vboxsync * Filter out the relevant kinds.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Nothing to monitor here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Nothing to monitor here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Install handler.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pPool->CTX_SUFF(pVM), pPool, pPageHead->idxDirtyEntry, false /* do not remove */);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo we should probably deal with out-of-memory conditions here, but for now increasing
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * the heap size should suffice. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgRC(rc, ("PGMHandlerPhysicalRegisterEx %RGp failed with %Rrc\n", GCPhysPage, rc));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsg(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3), ("fSyncFlags=%x syncff=%d\n", pVCpu->pgm.s.fSyncFlags, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Disables write monitoring of a guest page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS on success.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The cached page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Filter out the relevant kinds.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Nothing to monitor here. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Remove the page from the monitored list or uninstall it if last.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pNewHead),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsg(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync ("%#x %#x\n", pVCpu->pgm.s.fSyncFlags, pVM->fGlobalForcedActions));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Remove it from the list of modified pages (if in it).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Inserts the page into the list of modified pages.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Removes the page from the list of modified pages and resets the
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * modification counter.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page which is believed to be in the list of modified pages.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolMonitorModifiedRemove: idx=%d cModifications=%d\n", pPage->idx, pPage->cModifications));
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = NIL_PGMPOOL_IDX;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPage->iModifiedPrev].iModifiedNext = pPage->iModifiedNext;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Handle SyncCR3 pool tasks
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync * @retval VINF_SUCCESS if successfully added.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_PGM_SYNC_CR3 is it needs to be deferred to ring 3 (GC only)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVCpu The VMCPU handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @remark Should only be used when monitoring is available, thus placed in
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolSyncCR3 fSyncFlags=%x\n", pVCpu->pgm.s.fSyncFlags));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * When monitoring shadowed pages, we reset the modification counters on CR3 sync.
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync * Occasionally we will have to clear all the shadow page tables because we wanted
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * to monitor a page which was mapped by too many shadowed page tables. This operation
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * sometimes referred to as a 'lightweight flush'.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# ifdef IN_RING3 /* Don't flush in ring-0 or raw mode, it's taking too long. */
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync# else /* !IN_RING3 */
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync Log(("SyncCR3: PGM_SYNC_CLEAR_PGM_POOL is set -> VINF_PGM_SYNC_CR3\n"));
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3); /** @todo no need to do global sync, right? */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Make sure all other VCPUs return to ring 3. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# endif /* !IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* pgmPoolMonitorModifiedClearAll can cause a pgm pool flush (dirty page clearing), so make sure we handle this! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolMonitorModifiedClearAll caused a pgm flush -> call pgmPoolSyncCR3 again!\n"));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees up at least one user entry.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS if successfully added.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUser The user index.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Just free cached pages in a braindead fashion.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo walk the age list backwards and free the first with usage. */
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync } while (pPool->iUserFreeHead == NIL_PGMPOOL_USER_INDEX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Inserts a page into the cache.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * This will create user node for the page, insert it into the GCPhys
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * hash, and insert it into the age list.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @returns VBox status code.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @retval VINF_SUCCESS if successfully added.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The cached page.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @param iUser The user index.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsync * @param iUserTable The user table index.
a21a14c99f2698c3a8b6dc0a3086e087701fe719vboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint32_t iUserTable)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackInsert GCPhys=%RGp iUser=%d iUserTable=%x\n", GCPhys, iUser, iUserTable));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Check that the entry doesn't already exists.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg(paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Find free a user node.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Unlink the user node from the free list,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * initialize and insert it into the user list.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Insert into cache and enable monitoring of the guest page if enabled.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Until we implement caching of all levels, including the CR3 one, we'll
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * have to make sure we don't try monitor & cache any recursive reuse of
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
eb2d4958f7faf812c3bdb2d7587d815022f0bd55vboxsync * have to be able to do combined access monitoring, CR3 + PT and
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * PD + PT (guest PAE).
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync const bool fCanBeMonitored = true;
09f4b412099acda62997fd82c8608075c453b3ebvboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Adds a user reference to a page.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * This will move the page to the head of the
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @returns VBox status code.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @retval VINF_SUCCESS if successfully added.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param pPool The pool.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param pPage The cached page.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param iUser The user index.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param iUserTable The user table.
09f4b412099acda62997fd82c8608075c453b3ebvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolTrackAddUser GCPhys = %RGp iUser %x iUserTable %x\n", pPage->GCPhys, iUser, iUserTable));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Check that the entry doesn't already exists. We only allow multiple
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * users of top-level paging structures (SHW_POOL_ROOT_IDX).
09f4b412099acda62997fd82c8608075c453b3ebvboxsync AssertMsg(iUser != PGMPOOL_IDX_PD || iUser != PGMPOOL_IDX_PDPT || iUser != PGMPOOL_IDX_NESTED_ROOT || iUser != PGMPOOL_IDX_AMD64_CR3 ||
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Allocate a user node.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * Initialize the user node and insert it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pPool->CTX_SUFF(pVM), pPool, pPage->idxDirtyEntry, false /* do not remove */);
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * Tell the cache to update its replacement stats for this page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees a user record associated with a page.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * This does not clear the entry in the user table, it simply replaces the
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * user record to the chain of free records.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUser The shadow page pool index of the user table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUserTable The index into the user table (shadowed).
09f4b412099acda62997fd82c8608075c453b3ebvboxsyncstatic void pgmPoolTrackFreeUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Unlink and free the specified user entry.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log3(("pgmPoolTrackFreeUser %RGp %x %x\n", pPage->GCPhys, iUser, iUserTable));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Special: For PAE and 32-bit paging, there is usually no more than one user. */
09f4b412099acda62997fd82c8608075c453b3ebvboxsync /* General: Linear search. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Fatal: didn't find it */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%d iUserTable=%#x GCPhys=%RGp\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Gets the entry size of a shadow table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmKind The kind of page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * returned.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
19c7039bc1a59c1680538d8459b2a09c3a7ae9fdvboxsync * Gets the entry size of a guest table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param enmKind The kind of page.
9cdd4d805ecb43126372f7cf12e4032836cb738avboxsync * @returns The size of the entry in bytes. That is, 0, 4 or 8.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * returned.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo can we return 0? (nobody is calling this...) */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Checks one shadow page table entry for a mapping of a physical page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns true / false indicating removal of all relevant PTEs
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage The guest page in question.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iShw The shadow page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPte Page table entry or NIL_PGMPOOL_PHYSEXT_IDX_PTE if unknown
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic bool pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iShw, uint16_t iPte)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTInt: pPhysPage=%RHp iShw=%d iPte=%d\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iShw, iPte));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fRet = false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Assert sanity.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Then, clear the actual mappings to the page in the shadow PT.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_NONE: /** No handler installed. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_DISABLED: /** Monitoring is temporarily disabled. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_WRITE: /** Write access is monitored. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* (shouldn't be here, will assert below) */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter if we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPT->a[iPte].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32\n", iPte, pPT->a[iPte]));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Pte.n.u1Write = 0; /* need to disallow writes when dirty bit tracking is still active. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d u32=%RX32 poolkind=%x\n", pPage->iFirstPresent, pPage->cPresent, u32, pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /*PGM_DYNMAP_UNUSED_HINT_VM(pVM, pPT);*/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGMPOOLKIND_EPT_PT_FOR_PHYS: /* physical mask the same as PAE; RW bit as well; be careful! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_NONE: /* No handler installed. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_DISABLED: /* Monitoring is temporarily disabled. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_WRITE: /* Write access is monitored. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* (shouldn't be here, will assert below) */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter if we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64\n", iPte, PGMSHWPTEPAE_GET_LOG(pPT->a[iPte])));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Pte.u = (PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & u64AndMask) | u64OrMask;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Pte.n.u1Write = 0; /* need to disallow writes when dirty bit tracking is still active. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("Found %RX64 expected %RX64\n", PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX), u64));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[i]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d u64=%RX64 poolkind=%x iPte=%d PT=%RX64\n", pPage->iFirstPresent, pPage->cPresent, u64, pPage->enmKind, iPte, PGMSHWPTEPAE_GET_LOG(pPT->a[iPte])));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /*PGM_DYNMAP_UNUSED_HINT_VM(pVM, pPT);*/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Large page case only. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PDE4M_P | X86_PDE4M_PS;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PEPTPD pPD = (PEPTPD)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPD->a[iPte].u & (EPT_PDE2M_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pde=%RX64\n", iPte, pPD->a[iPte]));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter as we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPD->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPD->a[i].u & (EPT_PDE2M_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /*PGM_DYNMAP_UNUSED_HINT_VM(pVM, pPD);*/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* AMD-V nested paging */ /** @todo merge with EPT as we only check the parts that are identical. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PDE4M_P | X86_PDE4M_PS;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PX86PD pPD = (PX86PD)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPD->a[iPte].u & (X86_PDE2M_PAE_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pde=%RX64\n", iPte, pPD->a[iPte]));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter as we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPD->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPD->a[i].u & (X86_PDE2M_PAE_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /*PGM_DYNMAP_UNUSED_HINT_VM(pVM, pPD);*/
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* PGM_WITH_LARGE_PAGES */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("enmKind=%d iShw=%d\n", pPage->enmKind, iShw));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* not reached. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Scans one shadow page table for mappings of a physical page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage The guest page in question.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iShw The shadow page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iShw)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool); NOREF(pPool);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* We should only come here with when there's only one reference to this physical page. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(PGMPOOL_TD_GET_CREFS(PGM_PAGE_GET_TRACKING(pPhysPage)) == 1);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackFlushGCPhysPT: pPhysPage=%RHp iShw=%d\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iShw));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fKeptPTEs = pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, fFlushPTEs, iShw, PGM_PAGE_GET_PTE_INDEX(pPhysPage));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPT, f);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes a list of shadow page tables mapping the same physical page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage The guest page in question.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPhysExt The physical cross reference extent list to flush.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iPhysExt)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync bool fKeepList = false;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackFlushGCPhysPTs: pPhysPage=%RHp iPhysExt\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iPhysExt));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync bool fKeptPTEs = pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, fFlushPTEs, pPhysExt->aidx[i], pPhysExt->apte[i]);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* insert the list into the free list and clear the ram range entry. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Invalidate the tracking data. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes all shadow page table mappings of the given guest page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This is typically called when the host page backing the guest one has been
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * replaced or when the page protection was changed due to a guest access
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * caught by the monitoring.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_PGM_SYNC_CR3 if we're better off with a CR3 sync and a page
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * pool cleaning. FF and sync flags are set.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysPage GC physical address of the page in question
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage The guest page in question.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pfFlushTLBs This is set to @a true if the shadow TLBs should be
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * flushed, it is NOT touched if this isn't necessary.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * The caller MUST initialized this to @a false.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncint pgmPoolTrackUpdateGCPhys(PVM pVM, RTGCPHYS GCPhysPage, PPGMPAGE pPhysPage, bool fFlushPTEs, bool *pfFlushTLBs)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Is this page part of a large page? */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (PGM_PAGE_GET_PDE_TYPE(pPhysPage) == PGM_PAGE_PDE_TYPE_PDE)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTGCPHYS GCPhysBase = GCPhysPage & X86_PDE2M_PAE_PG_MASK;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Fetch the large page base. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolTrackUpdateGCPhys: update large page PDE for %RGp (%RGp)\n", GCPhysBase, GCPhysPage));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (PGM_PAGE_GET_PDE_TYPE(pLargePage) == PGM_PAGE_PDE_TYPE_PDE)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Mark the large page as disabled as we need to break it up to change a single page in the 2 MB range. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PGM_PAGE_SET_PDE_TYPE(pVM, pLargePage, PGM_PAGE_PDE_TYPE_PDE_DISABLED);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the base as that *only* that one has a reference and there's only one PDE to clear. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolTrackUpdateGCPhys(pVM, GCPhysBase, pLargePage, fFlushPTEs, pfFlushTLBs);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* PGM_WITH_LARGE_PAGES */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint16_t u16 = PGM_PAGE_GET_TRACKING(pPhysPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * The zero page is currently screwing up the tracking and we'll
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * have to flush the whole shebang. Unless VBOX_WITH_NEW_LAZY_PAGE_ALLOC
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * is defined, zero pages won't normally be mapped. Some kind of solution
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * will be needed for this problem of course, but it will have to wait...
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC) /** @todo we can drop this now. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Start a subset here because pgmPoolTrackFlushGCPhysPTsSlow and
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFlushGCPhysPTs will/may kill the pool otherwise. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (PGMPOOL_TD_GET_CREFS(u16) != PGMPOOL_TD_CREFS_PHYSEXT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync else if (u16 != PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFlushGCPhysPTs(pVM, pPhysPage, fFlushPTEs, PGMPOOL_TD_GET_IDX(u16));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolTrackFlushGCPhysPTsSlow(pVM, pPhysPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync# if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pVCpu->pgm.s.fSyncFlags |= PGM_SYNC_CLEAR_PGM_POOL;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Scans all shadow page tables for mappings of a physical page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This may be slow, but it's most likely more efficient than cleaning
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * out the entire page pool / cache.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * a page pool cleaning.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage The guest page in question.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d pPhysPage=%R[pgmpage]\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * There is a limit to what makes sense.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Iterate all the pages until we've encountered all that in use.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This is simple but not quite optimal solution.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P; /** @todo drop X86_PTE_P here as we always test if present separately, anyway. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint32_t u32 = u64; /** @todo move into the 32BIT_PT_xx case */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * We only care about shadow page tables.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPT->a[i].u = 0;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter as we're removing references. */
935a8412cc9b46bc9b5fc1a3bfaa0f6c73092e65vboxsync PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[i]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
935a8412cc9b46bc9b5fc1a3bfaa0f6c73092e65vboxsync PGMSHWPTEPAE_SET(pPT->a[i], 0); /// @todo why not atomic?
935a8412cc9b46bc9b5fc1a3bfaa0f6c73092e65vboxsync /* Update the counter as we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PEPTPT pPT = (PEPTPT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
935a8412cc9b46bc9b5fc1a3bfaa0f6c73092e65vboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if ((pPT->a[i].u & (EPT_PTE_PG_MASK | X86_PTE_P)) == u64)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPT->a[i].u = 0;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Update the counter as we're removing references. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
935a8412cc9b46bc9b5fc1a3bfaa0f6c73092e65vboxsync * There is a limit to what makes sense. The above search is very expensive, so force a pgm pool flush.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clears the user entry in a user table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This is used to remove all references to a page when flushing it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Map the user page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pUserPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackClearPageUser: clear %x in %s (%RGp) (flushing %s)\n", iUserTable, pgmPoolPoolKindToStr(pUserPage->enmKind), pUserPage->Core.Key, pgmPoolPoolKindToStr(pPage->enmKind)));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Safety precaution in case we change the paging for other modes too in the future. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Some sanity checks.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PDFLAGS_MAPPING));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* GCPhys >> PAGE_SHIFT is the index here */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* VBOX_STRICT */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear the entry in the user page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* 32-bit entries */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* 64-bit entries */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * In 32 bits PAE mode we *must* invalidate the TLB when changing a
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * PDPT entry; the CPU fetches them only during cr3 load, so any
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * non-present PDPT will continue to cause page faults.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* no break */
87150caf549846b0edba30c50dabe5092df70b5fvboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%d iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
87150caf549846b0edba30c50dabe5092df70b5fvboxsync PGM_DYNMAP_UNUSED_HINT_VM(pPool->CTX_SUFF(pVM), u.pau64);
87150caf549846b0edba30c50dabe5092df70b5fvboxsync * Clears all users of a page.
87150caf549846b0edba30c50dabe5092df70b5fvboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
87150caf549846b0edba30c50dabe5092df70b5fvboxsync * Free all the user records.
87150caf549846b0edba30c50dabe5092df70b5fvboxsync LogFlow(("pgmPoolTrackClearPageUsers %RGp\n", pPage->GCPhys));
87150caf549846b0edba30c50dabe5092df70b5fvboxsync /* Clear enter in user table. */
87150caf549846b0edba30c50dabe5092df70b5fvboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
87150caf549846b0edba30c50dabe5092df70b5fvboxsync /* Free it. */
87150caf549846b0edba30c50dabe5092df70b5fvboxsync /* Next. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Allocates a new physical cross reference extent.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns Pointer to the allocated extent on success. NULL if we're out of them.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param piPhysExt Where to store the phys ext index.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pPool->StamTrackPhysExtAllocFailures);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTX_SUFF(paPhysExts)[iPhysExt];
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees a physical cross reference extent.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPhysExt The extent to free.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTX_SUFF(paPhysExts)[iPhysExt];
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees a physical cross reference extent.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPhysExt The extent to free.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Insert a reference into a list of physical cross reference extents.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns The new tracking data for PGMPAGE.
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync * @param pVM The VM handle.
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync * @param iPhysExt The physical extent index of the list head.
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync * @param iShwPT The shadow page table index.
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync * @param iPte Page table entry
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT, uint16_t iPte)
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
6ee2125e4b083d65e10fa8b2ef8fc1d2303cedcbvboxsync * Special common cases.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (paPhysExts[iPhysExt].aidx[1] == NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedMany);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{,%d pte %d,}\n", iPhysExt, iShwPT, iPte));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedMany);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{,,%d pte %d}\n", iPhysExt, iShwPT, iPte));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync AssertCompile(RT_ELEMENTS(paPhysExts[iPhysExt].aidx) == 3);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * General treatment.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedMany);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{%d pte %d} i=%d cMax=%d\n", iPhysExt, iShwPT, iPte, i, cMax));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExtStart);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackOverflows);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: overflow (1) iShwPT=%d\n", iShwPT));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync /* advance */
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Add another extent to the list.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackNoExtentsLeft);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: pgmPoolTrackPhysExtAlloc failed iShwPT=%d\n", iShwPT));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: added new extent %d:{%d pte %d}->%d\n", iPhysExt, iShwPT, iPte, iPhysExtStart));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Add a reference to guest physical page where extents are in use.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @returns The new tracking data for PGMPAGE.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param u16 The ram range flags (top 16-bits).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iShwPT The shadow page table index.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPte Page table entry
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, PPGMPAGE pPhysPage, uint16_t u16, uint16_t iShwPT, uint16_t iPte)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (PGMPOOL_TD_GET_CREFS(u16) != PGMPOOL_TD_CREFS_PHYSEXT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Convert to extent list.
eb2d4958f7faf812c3bdb2d7587d815022f0bd55vboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, PGMPOOL_TD_GET_IDX(u16), iShwPT));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliased);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPhysExt->apte[0] = PGM_PAGE_GET_PTE_INDEX(pPhysPage);
706ec8d33965b04fc59fb0b1b0981b81ae23600dvboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync else if (u16 != PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED))
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Insert into the extent list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync u16 = pgmPoolTrackPhysExtInsert(pVM, PGMPOOL_TD_GET_IDX(u16), iShwPT, iPte);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedLots);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPte Shadow PTE index
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage, uint16_t iPte)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const unsigned cRefs = PGM_PAGE_GET_TD_CREFS(pPhysPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsg(cRefs == PGMPOOL_TD_CREFS_PHYSEXT, ("cRefs=%d pPhysPage=%R[pgmpage] pPage=%p:{.idx=%d}\n", cRefs, pPhysPage, pPage, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint16_t iPhysExt = PGM_PAGE_GET_TD_IDX(pPhysPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Look for the shadow page and check if it's all freed.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paPhysExts[iPhysExt].apte[i] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d\n", pPhysPage, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* we can free the node. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync const uint16_t iPhysExtNext = paPhysExts[iPhysExt].iNext;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* lonely node */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d lonely\n", pPhysPage, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync else if (iPhysExtPrev == NIL_PGMPOOL_PHYSEXT_INDEX)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d head\n", pPhysPage, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PGM_PAGE_SET_TRACKING(pVM, pPhysPage, PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExtNext));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* in list */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d in list\n", pPhysPage, pPage->idx));
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync AssertFatalMsgFailed(("not-found! cRefs=%d pPhysPage=%R[pgmpage] pPage=%p:{.idx=%d}\n", cRefs, pPhysPage, pPage, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync else /* nothing to do */
bbe8d54f2bca31d98ce10c89506ca5a53c9d41b7vboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage]\n", pPhysPage));
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * Clear references to guest physical memory.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * This is the same as pgmPoolTracDerefGCPhysHint except that the guest
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * physical address is assumed to be correct, so the linear search can be
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * skipped and we can assert at an earlier point.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pPage The page.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param HCPhys The host physical address corresponding to the guest page.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param GCPhys The guest physical address corresponding to HCPhys.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param iPte Shadow PTE index
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsyncstatic void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys, uint16_t iPte)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Lookup the page and check if it checks out before derefing it.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync RTHCPHYS HCPhysPage = PGM_PAGE_GET_HCPHYS(pPhysPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log2(("pgmPoolTracDerefGCPhys %RHp vs %RHp\n", HCPhysPage, HCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmTrackDerefGCPhys(pPool, pPage, pPhysPage, iPte);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhys=%RGp; found page has HCPhys=%RHp\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhys=%RGp\n", HCPhys, GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The host physical address corresponding to the guest page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhysHint The guest physical address which may corresponding to HCPhys.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iPte Shadow pte index
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint, uint16_t iPte)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTracDerefGCPhysHint %RHp %RGp\n", HCPhys, GCPhysHint));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Try the hint first.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync PPGMPAGE pPhysPage = pgmPhysGetPage(pVM, GCPhysHint);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmTrackDerefGCPhys(pPool, pPage, pPhysPage, iPte);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Damn, the hint didn't work. We'll have to do an expensive linear search.
dfec9ba035ff0c77d470041bc230a60542d39e27vboxsync STAM_COUNTER_INC(&pPool->StatTrackLinearRamSearches);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRangesX);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync while (iPage-- > 0)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Log4(("pgmPoolTracDerefGCPhysHint: Linear HCPhys=%RHp GCPhysHint=%RGp GCPhysReal=%RGp\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
dfec9ba035ff0c77d470041bc230a60542d39e27vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage], iPte);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhysHint=%RGp (Hinted page has HCPhys = %RHp)\n", HCPhys, GCPhysHint, HCPhysHinted));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Clear references to guest physical memory in a 32-bit / 32-bit page table.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pPool The pool.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pPage The page.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pShwPT The shadow page table (mapping of the page).
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pGstPT The guest page table.
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT, PCX86PT pGstPT)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync RTGCPHYS32 const fPgMask = pPage->fA20Enabled ? X86_PTE_PG_MASK : X86_PTE_PG_MASK & ~RT_BIT_32(20);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Log4(("pgmPoolTrackDerefPT32Bit32Bit: i=%d pte=%RX32 hint=%RX32\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & fPgMask, i);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * Clear references to guest physical memory in a PAE / 32-bit page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync * @param pGstPT The guest page table (just a half one).
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PT pGstPT)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync RTGCPHYS32 const fPgMask = pPage->fA20Enabled ? X86_PTE_PG_MASK : X86_PTE_PG_MASK & ~RT_BIT_32(20);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Assert( (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == 0
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync || (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == UINT64_C(0x7ff0000000000000));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX64 hint=%RX32\n",
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PG_MASK));
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & fPgMask, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pGstPT The guest page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTGCPHYS const fPgMask = pPage->fA20Enabled ? X86_PTE_PAE_PG_MASK : X86_PTE_PAE_PG_MASK & ~RT_BIT_64(20);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert( (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == 0
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == UINT64_C(0x7ff0000000000000));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX32 hint=%RX32\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & fPgMask, i);
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * Clear references to guest physical memory in a 32-bit / 4MB page table.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pShwPT The shadow page table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit4MB(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT)
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync RTGCPHYS const GCPhysA20Mask = pPage->fA20Enabled ? UINT64_MAX : ~RT_BIT_64(20);
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys & GCPhysA20Mask, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pPool The pool.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pPage The page.
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync * @param pShwPT The shadow page table (mapping of the page).
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT)
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync RTGCPHYS const GCPhysA20Mask = pPage->fA20Enabled ? UINT64_MAX : ~RT_BIT_64(20);
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync Assert( (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == 0
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync || (PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & UINT64_C(0x7ff0000000000400)) == UINT64_C(0x7ff0000000000000));
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync Log4(("pgmPoolTrackDerefPTPaeBig: i=%d pte=%RX64 hint=%RGp\n",
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), GCPhys));
5793d23a719d4902824a3649b6fef3822ddd5fc7vboxsync pgmPoolTracDerefGCPhys(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), GCPhys & GCPhysA20Mask, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in an EPT page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPT pShwPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTGCPHYS const GCPhysA20Mask = pPage->fA20Enabled ? UINT64_MAX : ~RT_BIT_64(20);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPT->a[i].u & UINT64_C(0xfff0000000000f80)) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPTEPT: i=%d pte=%RX64 GCPhys=%RX64\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, pShwPT->a[i].u & EPT_PTE_PG_MASK, pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & EPT_PTE_PG_MASK, GCPhys & GCPhysA20Mask, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in a 32 bits page directory.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPD(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PD pShwPD)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%x\n", pShwPD->a[i].u & X86_PDE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in a PAE (legacy or 64 bits) page directory.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPAE pShwPD)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPDPae: i=%d pde=%RX64 GCPhys=%RX64\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->GCPhys + i * 2 * _1M /* pPage->GCPhys = base address of the memory described by the PD */,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPD->a[i].u & (X86_PDE_PAE_MBZ_MASK_NX | UINT64_C(0x7ff0000000000200))) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & X86_PDE_PAE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in a PAE page directory pointer table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPTPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < X86_PG_PAE_PDPE_ENTRIES; i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPDPT->a[i].u & (X86_PDPE_PAE_MBZ_MASK | UINT64_C(0x7ff0000000000200))) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in a 64-bit page directory pointer table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPT64Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPDPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPDPT->a[i].u & (X86_PDPE_LM_MBZ_MASK_NX | UINT64_C(0x7ff0000000000200))) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in a 64-bit level 4 page table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPML464Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PML4 pShwPML4)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPML4->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPML4->a[i].u & (X86_PML4E_MBZ_MASK_NX | UINT64_C(0x7ff0000000000200))) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPML4->a[i].u & X86_PDPE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPML4->a[i].u & X86_PML4E_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in an EPT page directory.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPD pShwPD)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPD->a[i].u & UINT64_C(0xfff0000000000f80)) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log4(("pgmPoolTrackDerefPDEPT: i=%d pde=%RX64 GCPhys=%RX64\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync i, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->GCPhys + i * 2 * _1M /* pPage->GCPhys = base address of the memory described by the PD */,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & EPT_PDE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & EPT_PDE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear references to shadowed pages in an EPT page directory pointer table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPDPT pShwPDPT)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPDPT->a); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert((pShwPDPT->a[i].u & UINT64_C(0xfff0000000000f80)) == 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clears all references made by this page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This includes other shadow pages and GC physical addresses.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPage The page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Map the shadow page and take action according to the page kind.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGM_GCPHYS_2_PTR(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPT32Bit32Bit(pPool, pPage, (PX86PT)pvShw, (PCX86PT)pvGst);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGM_GCPHYS_2_PTR_EX(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPTPae32Bit(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PT)pvGst);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGM_GCPHYS_2_PTR(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGMPOOLKIND_32BIT_PT_FOR_PHYS: /* treat it like a 4 MB page */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPT32Bit4MB(pPool, pPage, (PX86PT)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync case PGMPOOLKIND_PAE_PT_FOR_PHYS: /* treat it like a 2 MB page */
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
340ee06f35257fee1bd68223ab3504cf2b1d0c3evboxsync pgmPoolTrackDerefPTPaeBig(pPool, pPage, (PPGMSHWPTPAE)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPDPae(pPool, pPage, (PX86PDPAE)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPDPTPae(pPool, pPage, (PX86PDPT)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPDPT64Bit(pPool, pPage, (PX86PDPT)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPML464Bit(pPool, pPage, (PX86PML4)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPTEPT(pPool, pPage, (PEPTPT)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPDEPT(pPool, pPage, (PEPTPD)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackDerefPDPTEPT(pPool, pPage, (PEPTPDPT)pvShw);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* paranoia, clear the shadow page. Remove this laser (i.e. let Alloc and ClearAll do it). */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes a pool page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * This moves the page to the free list after removing all user references to it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS on success.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param fFlush Flush the TLBS when required (should only be false in very specific use cases!!)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncint pgmPoolFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fFlush)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolFlushPage: pPage=%p:{.Key=%RHp, .idx=%d, .enmKind=%s, .GCPhys=%RGp}\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Quietly reject any attempts at flushing any of the special root pages.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolFlushPage: special root page, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Quietly reject any attempts at flushing the currently active shadow CR3 mapping
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertMsg( pPage->enmKind == PGMPOOLKIND_64BIT_PML4
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PDPT_FOR_32BIT
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD1_FOR_32BIT_PD
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD2_FOR_32BIT_PD
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync ("Can't free the shadow CR3! (%RHp vs %RHp kind=%d\n", PGMGetHyperCR3(VMMGetCpu(pVM)), pPage->Core.Key, pPage->enmKind));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolFlushPage: current active shadow CR3, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Start a subset so we won't run out of mapping space. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Mark the page as being in need of an ASMMemZeroPage().
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, pPage->idxDirtyEntry, false /* do not remove */);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* If there are any users of this table, then we *must* issue a tlb flush on all VCPUs. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear the page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flush it from the cache.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Heavy stuff done. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Deregistering the monitoring.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Free the page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Flush the TLBs of all VCPUs if required. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees a usage of a pool page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * The caller is responsible to updating the user table so that it no longer
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * references the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUser The shadow page pool index of the user table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUserTable The index into the user table (shadowed).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolFreeByPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolFreeByPage: pPage=%p:{.Key=%RHp, .idx=%d, enmKind=%s} iUser=%d iUserTable=%#x\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), iUser, iUserTable));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolTrackFreeUser(pPool, pPage, iUser, iUserTable);
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Makes one or more free page free.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @returns VBox status code.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VINF_SUCCESS on success.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param pPool The pool.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param enmKind Page table kind
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * @param iUser The user of the page.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsyncstatic int pgmPoolMakeMoreFreePages(PPGMPOOL pPool, PGMPOOLKIND enmKind, uint16_t iUser)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolMakeMoreFreePages: iUser=%d\n", iUser));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * If the pool isn't full grown yet, expand it.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync /* Hack alert: we can't deal with jumps to ring 3 when called from MapCR3 and allocating pages for PAE PDs. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync && (enmKind < PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD || enmKind > PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD)
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync int rc = VMMRZCallRing3NoCpu(pVM, VMMCALLRING3_PGM_POOL_GROW, 0);
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * Free one cached page.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * Allocates a page from the pool.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * This page may actually be a cached page and not in need of any processing
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * on the callers part.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @returns VBox status code.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @retval VINF_SUCCESS if a NEW page was allocated.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @retval VINF_PGM_CACHED_PAGE if a CACHED page was returned.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param pVM The VM handle.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * For 4MB and 2MB PD entries, it's the first address the
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * shadow PT is covering.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param enmKind The kind of mapping.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param enmAccess Access type for the mapping (only relevant for big pages)
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param fA20Enabled Whether the A20 gate is enabled or not.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param iUser The shadow page pool index of the user table.
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param iUserTable The index into the user table (shadowed).
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param fLockPage Lock the page
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * @param ppPage Where to store the pointer to the page. NULL is stored here on failure.
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsyncint pgmPoolAlloc(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, PGMPOOLACCESS enmAccess, bool fA20Enabled,
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync uint16_t iUser, uint32_t iUserTable, bool fLockPage, PPPGMPOOLPAGE ppPage)
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync LogFlow(("pgmPoolAlloc: GCPhys=%RGp enmKind=%s iUser=%d iUserTable=%#x\n", GCPhys, pgmPoolPoolKindToStr(enmKind), iUser, iUserTable));
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync /** @todo CSAM/PGMPrefetchPage messes up here during CSAMR3CheckGates
4a9af9a8062589b741444d717d2dd1ed22b0f583vboxsync * (TRPMR3SyncIDT) because of FF priority. Try fix that?
3a343ca21a267ec3c54e2317e2ed18fe99b8ebbbvboxsync * Assert(!(pVM->pgm.s.fGlobalSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)); */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc2 = pgmPoolCacheAlloc(pPool, GCPhys, enmKind, enmAccess, fA20Enabled, iUser, iUserTable, ppPage);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAlloc: cached returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Allocate a new one.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc = pgmPoolMakeMoreFreePages(pPool, enmKind, iUser);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertReleaseReturn(iNew != NIL_PGMPOOL_IDX, VERR_PGM_POOL_IPE);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* unlink the free head */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Initialize it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->fSeenNonGlobal = false; /* Set this to 'true' to disable this feature. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Insert into the tracking and cache. If this fails, free the page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc3 = pgmPoolTrackInsert(pPool, pPage, GCPhys, iUser, iUserTable);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("pgmPoolAlloc: returns %Rrc (Insert)\n", rc3));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Commit the allocation, clear the page and return.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolAlloc: returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync rc, pPage, pPage->Core.Key, pPage->idx, pPage->fCached, pPage->fMonitored));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Frees a usage of a pool page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUser The shadow page pool index of the user table.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param iUserTable The index into the user table (shadowed).
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolFree(PVM pVM, RTHCPHYS HCPhys, uint16_t iUser, uint32_t iUserTable)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync LogFlow(("pgmPoolFree: HCPhys=%RHp iUser=%d iUserTable=%#x\n", HCPhys, iUser, iUserTable));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmPoolFreeByPage(pPool, pgmPoolGetPage(pPool, HCPhys), iUser, iUserTable);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Internal worker for finding a 'in-use' shadow page give by it's physical address.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns Pointer to the shadow page structure.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncPPGMPOOLPAGE pgmPoolGetPage(PPGMPOOL pPool, RTHCPHYS HCPhys)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Look up the page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPAGE pPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, HCPhys & X86_PTE_PAE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsg(pPage && pPage->enmKind != PGMPOOLKIND_FREE, ("HCPhys=%RHp pPage=%p idx=%d\n", HCPhys, pPage, (pPage) ? pPage->idx : 0));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Internal worker for finding a page for debugging purposes, no assertions.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @returns Pointer to the shadow page structure. NULL on if not found.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param HCPhys The HC physical address of the shadow page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncPPGMPOOLPAGE pgmPoolQueryPageForDbg(PPGMPOOL pPool, RTHCPHYS HCPhys)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, HCPhys & X86_PTE_PAE_PG_MASK);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#ifdef IN_RING3 /* currently only used in ring 3; save some space in the R0 & GC modules (left it here as we might need it elsewhere later on) */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flush the specified page if present
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param GCPhys Guest physical address of the page to flush
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmPoolFlushPageByGCPhys(PVM pVM, RTGCPHYS GCPhys)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Look up the GCPhys in the hash.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Log(("PGMPoolFlushPage: found pgm pool pages for %RGp\n", GCPhys));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* ignore, no monitoring. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync } while (i != NIL_PGMPOOL_IDX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Reset CPU on hot plugging.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVM The VM handle.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * @param pVCpu The virtual CPU.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncvoid pgmR3PoolResetUnpluggedCpu(PVM pVM, PVMCPU pVCpu)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Flushes the entire cache.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * this and execute this CR3 flush.
09f4b412099acda62997fd82c8608075c453b3ebvboxsync * @param pPool The pool.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * If there are no pages in the pool, there is nothing to do.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Exit the shadow mode since we're going to clear everything,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * including the root page.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pgmR3ExitShadowModeBeforePoolFlush(&pVM->aCpus[i]);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Nuke the free list and reinsert all pages into it.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = pPool->cCurPages - 1; i >= PGMPOOL_IDX_FIRST; i--)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->Core.Key == MMPage2Phys(pVM, pPage->pvPageR3));
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPage->fZeroed = false; /* This could probably be optimized, but better safe than sorry. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Zap and reinitialize the user records.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < cMaxUsers; i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRangesX);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync while (iPage-- > 0)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PGM_PAGE_SET_TRACKING(pVM, &pRam->aPages[iPage], 0);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paPhysExts[i].apte[0] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paPhysExts[i].apte[1] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paPhysExts[i].apte[2] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Just zap the modified list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Clear the GCPhys hash and the age list.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aiHash); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* Clear all dirty pages. */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aDirtyPages); i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Reinsert active pages into the hash and ensure monitoring chains are correct.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync for (unsigned i = PGMPOOL_IDX_FIRST_SPECIAL; i < PGMPOOL_IDX_FIRST; i++)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync /* ASSUMES that we're not sharing with any of the other special pages (safe for now). */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync int rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK,
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pPage),
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync Assert(pPage->iUserHead == NIL_PGMPOOL_USER_INDEX); /* for now */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Re-enter the shadowing mode and assert Sync CR3 FF.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* IN_RING3 */
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync * Stringifies a PGMPOOLKIND value.
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsyncstatic const char *pgmPoolPoolKindToStr(uint8_t enmKind)
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_INVALID";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_FREE";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_32BIT_PT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PAE_PT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PAE_2MB";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_32BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_32BIT_PD_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD1_FOR_32BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD2_FOR_32BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD_FOR_PAE_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PD_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PDPT_FOR_32BIT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PDPT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_PAE_PDPT_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_64BIT_PDPT_FOR_64BIT_PDPT";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_64BIT_PDPT_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_64BIT_PD_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_64BIT_PML4";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_EPT_PDPT_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_EPT_PD_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_EPT_PT_FOR_PHYS";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "PGMPOOLKIND_ROOT_NESTED";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync return "Unknown kind!";
9055f61bb57d2a625c6434d55beac7565c3b3c0dvboxsync#endif /* LOG_ENABLED*/